生物质Fe-Ce/白云石催化剂催化气化试验研究
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国家自然科学基金地区科学基金项目(51768054、51764044、51764046)、内蒙古自然科学基金面上项目(2017MS(LH)0524)、内蒙古科学技术厅项目(20180823)和内蒙古自治区科技创新引导项目(KCBJ201877)


Preparation of Fe-Ce/Dolomite Catalyst and Its Catalytic Performance of Gasification Biomass
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    摘要:

    采用浸渍法制备了Fe-Ce/白云石催化剂,运用SEM和XRD检测对催化剂进行了表征,在自行搭建的固定床气化炉试验台上进行高温水蒸气催化气化试验,研究了助剂含量、气化温度等因素对松木棒水蒸气气化特性的影响,以及催化剂使用次数对气体组分和催化剂积碳沉积的影响。试验结果表明,助剂Fe和Ce能够很好地负载于白云石上,助剂负载量为8%Fe-2%Ce的催化剂气化效果较好。用该催化剂进行不同温度的松木棒水蒸气气化试验,温度从750℃升高至950℃,产气率、产氢率分别由750℃的1.05m3/kg和31.67g/kg提高到900℃的1.56m3/kg和65.39g/kg,与无催化剂的气化试验相比,900℃的产气率、产氢率分别增加了0.15m3/kg和16.27g/kg,氢气体积分数由39.02%升高至46.95%。在800℃时对催化剂进行重复利用3次气化试验,氢气体积分数由第1次的40.34%降低至第2次的38.97%和第3次的34.95%,积碳量由第1次的21.55mg/g升至第3次的31.61mg/g,催化活性降低。

    Abstract:

    Fe-Ce/dolomite catalyst was prepared by the impregnation method, and the catalyst was characterized by SEM and XRD. The hightemperature water vapor catalytic gasification test was carried out on a selfbuilt fixedbed gasification furnace test station, and the content of the auxiliary agent was studied. The effect of the gasification temperature and other factors on the gasification characteristics of the water vapor of pine rod and effect of number of times of catalyst on deposition of gas component and catalyst were researched. The experimental results showed that the auxiliary Fe and Ce can be well supported on the dolomite, and the catalyst gasification effect of the assistant content of 8% Fe-2% Ce was good. Fixed the catalytic temperature, and the catalyst was used for making the pine wood rod at different temperatures. In the steam gasification test, when the temperature was increased from 750℃ to 950℃, the gas production rate and hydrogen production rate were increased from 1.05m3/kg and 31.67g/kg at 750℃ to 1.56m3/kg and 65.39g/kg at 900℃, respectively. Compared with the gasification test without catalyst, the hydrogen production rate was increased by 0.15m3/kg and 16.27g/kg, and the hydrogen volume fraction was increased from 39.02% to 46.95%, respectively. The third gasification test of the catalyst was carried out at 800℃. The volume fraction of hydrogen was decreased from 40.34% in the first time to 38.97% in the second time and 34.95% in the third time. The amount of carbon deposition was increased from the first time of 21.55mg/g to the third time of 31.61mg/g.

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牛永红,刘琨琨,蔡尧尧,李义科,王文才.生物质Fe-Ce/白云石催化剂催化气化试验研究[J].农业机械学报,2020,51(4):361-366. NIU Yonghong, LIU Kunkun, CAI Yaoyao, LI Yike, WANG Wencai. Preparation of Fe-Ce/Dolomite Catalyst and Its Catalytic Performance of Gasification Biomass[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(4):361-366.

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  • 收稿日期:2019-08-20
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  • 在线发布日期: 2020-04-10
  • 出版日期: 2020-04-10